JavaScript中通过prototype属性共享属性和方法的技巧实例

//定义函数

function people(name,sex,age){ 

 this.name = name;

 this.sex = sex;

 this.age = age;

}

 

//共享isStudent与sayName方法

people.prototype = {  

 isStudent:true,

 sayName:function(){

  alert(this.name);

 }

}

 

var people1 = new people('韩梅梅','女',16);  //实例化对象1

var people2 = new people('李磊','男',17);    //实例化对象2

 

//通过共享的方法让两个对象说出自己的名字

people1.sayName(); 

people2.sayName();

 

//通过共享的参数判断他们都是学生

if(people1.isStudent == people2.isStudent)alert('他们都是学生');